The Alaska Volcano Observatory has issued its highest level of alert for aviation after what it says was a brief eruption of a volcano on the Aleutian Islands on Tuesday.

An ongoing eruption of a remote volcano in Alaska’s Aleutian Islands produced an ash cloud so large Tuesday that warnings were sent to pilots about potentially dangerous conditions. An ash cloud ...

Tanaga Island west of Adak, home to Tanaga and Takawangha volcanoes, began showing increasing earthquake activity March 4. 2 Aleutian volcanoes on watch for potential eruption ...

Three volcanoes are erupting across the Aleutian Range — Great Sitkin and Semisopochnoi in the Aleutian Islands and Pavlof Volcano on the Alaska Peninsula.

A seismologist from Seattle discussed recent volcanic activity across the United States. Here's what you should know.

ANCHORAGE, Alaska – A volcano on a remote island in Alaska's Aleutian chain has erupted again, prompting an aviation alert. The Alaska Volcano Observatory says the Bogoslof (BOH-goh-slawf ...

The eruptions do not pose a threat to any nearby community due to the location of the Aleutian island chain, an 800-mile stretch of islands that ring the Bering Sea.

Along a remote, roughly 800-mile stretch of Alaska's Aleutian island chain, three volcanoes are erupting at the same time, with at least two spewing low levels of ash and steam. Image: Volcanoes ...

ANCHORAGE, Alaska -- A volcano is erupting again in Alaska’s Aleutian Islands.The Alaska Volcano Observatory says a Coast Guard vessel crew was in the area of the Bogoslof volcano Friday morning ...

High-resolution satellite images show that Semisopochnoi - a volcano in Alaska's Aleutian Islands - erupted on Thursday, prompting officials to raise the alert level.

When Alaska's Kasatochi Volcano erupted on Aug. 7, 2008, it virtually sterilized Kasatochi Island, covering the small Aleutian island with a layer of ash and other volcanic material several meters ...